For some reason the chords wouldn't align right so I've put them above where they 
need to be played. Just listen to the song and it's obvious where to change chords. 
 
No capo. 

G D Am D (pluck D string followed by G and B together)
Here we are again and you're a whole year older
You've been a shoulder for me to cry on
We've done so much this year from Paris to Orlando
And even more though they won?t fit in this song

Am D (strum once)
And I'm still so glad I've got a friend who's barking mad

G Am D G (same plucking pattern as before)
So Happy Birthday Alex Day
I'm sorry I'm not there to sing this song
There's still so much we can achieve
If we can keep each other going strong

G D Am D (same plucking as before)
And I am still so proud of everything that you did
From Stupid Stupid to changing your clothes
Although you now look like an unwrapped Dairy Milk bar
You're still the huge star that I've always known

Am D (strum once)
And yes we've made mistakes but give the birthday boy a break

G Am D G (same plucking pattern as before)
So Happy Birthday Alex Day
Thanks for the adventures we've been on 
And here?s to years of thousands more 
And yes each year you should expect this song